笑顔がキュートな山内やよいちゃんのエンサイクロペディア、大図鑑。徹底的にやよいちゃんの体を測定していきますよー！舌の長さや、乳首の大きさを計測した後、コリコリと乳首を刺激！うっとりと気持ちよさそうな表情を見せてくれます。その後も、ヘソや、クリトリスを計測。そして、腟内温度を計測。可愛いやよいちゃんはどんな反応を見せてくれるのかな？

An encyclopedia and encyclopedia of Yayoi Yamauchi, who has a cute smile. We will thoroughly measure Yayoi-chan's body! After measuring the length of your tongue and the size of your nipples, stimulate your nipples! He looks enchanted and comfortable. After that, the belly button and clitoris were measured. Then, the vaginal temperature was measured. What kind of reaction will cute Yayoi-chan show?